• county
  • FIPS 29151
  • Largest town: Linn

Osage County, Missouri

Osage County had 13,478 residents in the Census Vintage 2024 estimate, on 606.6 square miles of land. It ranks 73rd of 115 in Missouri by population and 53rd by land area.

Population
13,478
#73 of 115 in Missouri · #2,190 in US
Area
606.6 sq mi
#53 of 115 in Missouri · #1,603 in US
Density
22 / sq mi
#74 of 115 in Missouri · #2,159 in US
Median household income
$73,660
#13 of 115 in Missouri · #748 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Osage County within Missouri. Pin: Jefferson City.

Measure from here

Tools and pages that start from Osage County

Osage County population, land area and income

Osage County had 13,478 residents in the Census Vintage 2024 estimate, on 606.6 square miles of land. It ranks 73rd of 115 in Missouri by population and 53rd by land area. That works out to 22.2 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Missouri has 19,100 residents; Osage County is somewhat smaller.

Its SAIPE 2023 median household income of $73,660 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

13,478

3144th1st

2190th of 3,144 (US)

Land area

607 sq mi

3144th1st

1603rd of 3,144 (US)

Density

22.2 / sq mi

3144th1st

2159th of 3,144 (US)

Median household income

$73,660

3143rd1st

748th of 3,143 (US)

Rank within Missouri (115)

Population

13,478

115th1st

73rd of 115 (MO)

Land area

607 sq mi

115th1st

53rd of 115 (MO)

Density

22.2 / sq mi

115th1st

74th of 115 (MO)

Median household income

$73,660

115th1st

13th of 115 (MO)

How Osage County's population changed since 2020

Osage County gained 223 residents between the July 2020 and July 2024 estimates, a rise of 1.7%. That ranks 53rd of 115 in Missouri for growth. The median Missouri county changed by +1.4%, and the state as a whole by +1.5%.

Since the April 2020 estimates base, Osage County recorded 680 births and 631 deaths, a natural change of +49. Net international migration added -4 and net domestic migration, people moving to or from other US counties, came to +171. The largest single component was domestic migration, which added 171 people.

13.3k202013.4k202113.4k202213.5k202313.5k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
680
Deaths
631
Net international migration
-4
Net domestic migration
+171
Change, July 2023 to July 2024
-1

Where Osage County is

The Census internal point of Osage County is at 38.464300, -91.859500. It sits in UTM zone 15N. The map shades Missouri's 115 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Osage County outlined. Dots are towns of 1,000+ people with residents in it.

Pettis County: +1.8%Henry County: +2.7%Texas County: +5.7%Madison County: +1.8%St. Louis city: -6.9%Cole County: +1.3%Washington County: +0.6%Macon County: -0.1%Barton County: +0.8%Grundy County: +0.1%Cedar County: +5.7%Randolph County: -1.6%Ray County: +0.3%Caldwell County: +2.0%Benton County: +6.1%Douglas County: +5.9%Shannon County: +3.4%Dade County: +0.5%Wright County: +7.1%Gentry County: +2.6%Lawrence County: +3.0%Cooper County: +2.9%Hickory County: +5.6%Moniteau County: +0.5%Dent County: +2.3%Monroe County: +2.3%Maries County: +0.7%Bollinger County: +0.5%Clinton County: +2.4%Knox County: +0.0%Webster County: +7.8%Harrison County: +0.4%Pulaski County: -0.1%Adair County: +1.5%Warren County: +7.7%Daviess County: +1.3%Audrain County: -1.9%Howard County: -0.1%Linn County: +0.4%Saline County: -0.1%Miller County: +3.6%Dallas County: +4.3%Morgan County: +6.7%New Madrid County: -6.8%Newton County: +4.8%Oregon County: +1.0%Franklin County: +2.3%Greene County: +2.9%Ralls County: +1.4%Lafayette County: +1.4%Livingston County: +4.8%McDonald County: +3.3%Barry County: +3.1%Cape Girardeau County: +2.2%Carroll County: -0.6%Christian County: +7.6%Vernon County: +0.6%Carter County: +3.0%Andrew County: -0.1%Jasper County: +2.9%Worth County: -4.9%Lincoln County: +10.1%Marion County: -0.2%Holt County: +1.2%Howell County: +2.4%St. Francois County: +1.6%Chariton County: +0.1%Butler County: -0.6%Iron County: -1.0%Perry County: +0.7%Cass County: +5.3%St. Louis County: -1.0%Dunklin County: -4.3%Wayne County: -1.1%Ozark County: +6.7%Laclede County: +1.9%Reynolds County: -2.5%Lewis County: -1.9%Taney County: +1.2%Ripley County: +0.4%Ste. Genevieve County: +0.4%Scotland County: -0.1%Putnam County: -3.1%Schuyler County: +1.5%Shelby County: -2.8%Boone County: +4.4%Mercer County: -1.7%Platte County: +5.6%Camden County: +3.1%Bates County: +2.1%Johnson County: +3.4%Sullivan County: -3.8%Atchison County: -3.1%Scott County: -0.2%Montgomery County: +2.0%Jefferson County: +2.2%Clark County: -0.5%Callaway County: +1.8%St. Clair County: +5.4%Buchanan County: -1.1%Pemiscot County: -7.6%Polk County: +4.6%Phelps County: +2.5%Stone County: +4.6%Osage County: +1.7%Clay County: +3.6%Nodaway County: -2.4%Crawford County: -1.0%Jackson County: +1.4%St. Charles County: +4.3%Mississippi County: -3.1%Pike County: +3.1%Stoddard County: -0.7%Gasconade County: -0.7%DeKalb County: -14.8%
Change 2020 to 2024
  1. < -0.7%
  2. < +0.5%
  3. < +2.0%
  4. < +3.6%
  5. ≥ +3.6%
no data

Orange pin: Osage County internal point. Dark pin: Jefferson City.

Internal point

Decimal
38.464300, -91.859500
DMS
38°27'51.48"N 91°51'34.20"W
UTM
15N 599499.7E 4257948.1N
Geohash
9yydvdjyy
Plus code
86CCF47R+P5

Towns in Osage County

2 incorporated places of 1,000+ people have residents in Osage County, 1,644 people together, or 12% of the county. Each figure counts only the part of the town inside Osage County; towns marked "part" extend into another county. The largest is Linn with 1,431.

  1. 01Linn1,431
  2. 02Belle (part)213
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Osage County

The Census 2024 county adjacency file lists 6 neighbors for Osage County. The most populous is Cole County, MO, with 77,625 residents. Distances run between Census internal points in a straight line.

Distance to Jefferson City and the nearest big city

Jefferson City is 18.7 miles WNW of Osage County's internal point in a straight line. The nearest place of 100,000 or more is Columbia, MO (population 130,900), 41.8 miles away. The nearest place of 10,000 or more is Jefferson City, MO (population 42,564), 18.5 miles away.

Osage County FIPS code

The FIPS code of Osage County is 29151: state code 29 for Missouri plus county code 151. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $73,660.

Questions people ask

What is the population of Osage County, Missouri?

The Census Vintage 2024 estimate for July 1, 2024 is 13,478. That is up 223 people (1.7%) from the July 2020 estimate of 13,255.

What is the FIPS code of Osage County?

29151. The first two digits (29) are Missouri; the last three (151) identify the county.

What is the largest town in Osage County?

Linn, with 1,431 residents inside Osage County in 2024.

Which counties border Osage County?

6 county-equivalents border it in the Census 2024 adjacency file: Cole County, MO; Callaway County, MO; Miller County, MO; Gasconade County, MO; Montgomery County, MO; Maries County, MO.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.